The diameter of 7-inch pizza is 17.78 cm, and the diameter of 9-inch pizza is 22.86 cm.

Since it is relatively large, we should calculate the area. Through the area formula π r of the circle? Can we get two 7-inch pizzas with an area of about 496cm? A 9-inch pizza and dough mixer is about 4 10cm? So we come to the conclusion that two 7-inch pizzas are bigger than one 9-inch pizza.

Pizza, also called pizza, pizza, pizza, pizza, is a kind of food that originated in Italy and is very popular all over the world. The usual practice of pizza is to use fermented round cakes covered with tomato sauce, cheese and other ingredients and bake them in the oven.

Cheese usually uses mozzarella cheese, but there are some forms of mixed cheese, including Parmesan cheese, Romano cheese, whey cheese or Monterey Jack cheese, mozzarella cheese and so on.

The longest pizza in the world is produced in California, USA, with a length of1930m, making it the Guinness on the tip of the tongue.

Pizza difference:

Distinguish whether a pizza is authentic or not depends on how the bottom of the pizza is shaped. The accepted standard in the industry is that if it is Italian pizza, it must be thrown by hand, and the bottom of the pizza is thrown by hand without mechanical processing. The bottom of finished pizza is round and flat.

The "flanging" is uniform, and the "flanging" is 2-3 cm high and 2 cm wide. If it's an American pizza, it must be a sizzling pizza. The bottom of pizza is formed by machining. The bottom of the finished pizza is round, flat-bottomed, and even has a "flanging", which is 4-5cm high and 3cm wide. Other cake bottom molding methods can be regarded as unorthodox practices, which will cause poor appearance and lack of taste of finished products.